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Finding the Fourth Proportional to 330,144.96, 455,628.24 and 186,930.24

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Solution

The fourth proportional to 330,144.96, 455,628.24 and 186,930.24 is: 257,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,144.96 : 455,628.24 = 186,930.24 : x
  2. Step 2: Convert to fraction form
    330,144.96/455,628.24 = 186,930.24/x
  3. Step 3: Cross multiply
    330,144.96x = 455,628.24 × 186,930.24
  4. Step 4: Simplify right side
    330,144.96x = 85,170,696,253.98
  5. Step 5: Solve for x
    x = 85,170,696,253.98/330,144.96
  6. Step 6: Final answer
    x = 257,979.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.